Geotechnical Features Of High-rise Buildings

The main feature of the interaction of high-rise buildings with bases in comparison with conventional structures is that are attached to the base of much greater magnitude and more uniform in the area of spots development pressures, including the moment. This circumstance is caused by a significant total load on the ground, and the fact that high-rise buildings often are designed for architectural and planning considerations as tower-type structures, including variable number of floors within a building spot. Specific pressure on ground under the foundation structure constructed and operated a number of high-rise buildings can reach values of 500 – 600 kPa or more, which is especially dangerous with a marked eccentricity of load application. The second feature of the geotechnical high-rise buildings connected with the first and most strongly influence the appointment of the composition and volume of engineering research, is that due to increased stress on the base of these buildings to engage the large amounts of soil, having, as a rule, substantial heterogeneity in terms of, and depth. With respect to deep location of the bedrock heavy loads often have to pass on the Quaternary deposits that have enough high strength characteristics and high compressibility. In such conditions of uneven transfer of loads, heterogeneity of soil strata and increased their deformability when taking underperforming design decisions can lead to excessive sediment deflections, bends and rolls foundation parts of buildings and, consequently, to develop beyond regulatory compliance efforts in the construction of aboveground and underground parts of the building, as well as an unacceptable deviation top Building on the vertical axis.


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